Ornamental chain



FIG. 1 is a front elevational view of an ornamental chain showing my new design;

FIG. 2 is a side elevational view, the opposite side view being identical;

FIG. 3 is a rear elevational view;

FIG. 4 is a cross-sectional view taken along the lines 4--4 of FIG. 1; and,

FIG. 5 is a three-dimensional segment of the chain. 

The ornamental design for an ornamental chain, as shown and described. 